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L. O. WALKER.

I FASTENER FOR THE MEETING RAILS 0F SASHES. No. 472 088. Patented Apr.5, 1892,.

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LEWIS C. l/VALKER, OF INDIANAPOLIS, INDIANA.

FASTENER FOR THE MEETING-RAELS'OF SASHES.

SPECIFICATION forming part of Letters Patent No. 472,088, dated April 5,1892. Application filed December 31, 1891. Serial No. 416,735. (Nomodel.)

To all whom it may concern.-

Be it known that I, LEwIs O. WALKER, of Indianapolis, county ofMarion,and State of Indiana, have invented certain new and useful Improvementsin Sash-Fasteners; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had totheaccompanying drawings, in which like figures refer to like parts.

My invention relates to improvements in the construction ofsash-fasteners; and its ob- Ject is to secure thorough and safeventilation of the room either from above or below, or from both pointsat once, by the joint movement of both the upper and lower sashes whenlocked together, to prevent any lateral movement of the sash in thecasing, and to operate the locking mechanism by a removable key, andwill be understood from the following description.

In the drawings, Figure 1 is a perspective View of parts of the upperand lower sashes of the window and easing, the glass being broken awayand showing my devicein place. Fig. 2 is an enlarged vertical section ofthe same on the line a: as, Fig. 1. Fig. 3 is a detail perspective viewof the lock and key, the latter removed. Fig.4 is a central longitudinalsection of the lock,the key beingin place and the bolt held back.

In detail, 1 is the casing, and 2 the upperand 3 the lower sash of thewindow.

4 is a metal plate provided with a central groove 5 and tapering sockets6, this plate being let into the side rail of the upper sash and securedby screws, as shown in Figs. 1 and 2, the face of the plate being flushwith the surface of the sash-rail.

7 is a lock composed of a casing having a spring-bolt 8, its endtapering and normally protruding from the opening in the end of thelock-casing, as shown in Fig. 3.

9 is a removable keyhaving a flange 10 and a pin 11, the pin moving inthe slot 12, having the enlargement 13 in the top of the lockcasing.This lock is let into the meeting-rail of the lower sash, so that itstop surface is flush with that of the rail, as shown in Fig. 1, itsbolt-opening being in line with the central groove 5 in the plate 4, sothat the tapering head will engage with the tapering sockets of suchplate at the point desired. These sockets may be made any convenientdistance apart that it is desired to set the sash. The flange 10 of thekey will easily turn in the enlargement 13 of the slot in thelock-casing, and when desired the bolt maybe drawn back and the keyturned and the parts locked in position, as shown in Fig. 4, and in suchcase it is obvious that the lower sash maybe raised or the upper sash belowered without meeting with any obstruction. from the contact of theend of the bolt with the other parts of the sash, and there will be noscratching or abrasion of the wood or metal.

In Fig. 2 the upper and lower sashes are seen locked together, the'boltbeing entered in the second sooketin the plate, whereby the upper sashis dropped to a distance equal to that between the two lower sockets,thus allowing ventilation over the top of the upper sash while the lowersash is in its normal position. WVhen the sashes are thus locked,

it is obvious that they are movable together, 1

so that if it is desired the sashes maybe raised together, closing theupper sash and lifting the lower sash a corresponding distance, thusventilating the room from below, and if the key be removed it is furtherobvious that the sash may be left in this position over night, securingventilation of the room without making an opening large enough to admitan intruder or enable him to unlock the sash without breaking the glassand providing himself with another key or its equivalent.

The bolt-head and sockets are made tapering, so that as the bolt slidesforward, the diameter of its head being less than that of thesocket-opening it will readily center itself and enter the socketwithout being hindered by any lateral movement or displacement of thesash, and to provide further against such displacement or lateralmovement, so common in ordinary window-sashes, is the office of thegroove 5, so that the head of the bolt will travel in this groove as aguide and will bear against the sides of the groove, and no lateralmovement of the sash will therefore take place.

lock for a sash and a device to prevent rattling of the same, eitherfrom the vertical or the lateral movement in the casing, and also I thuscombine in one device a provide for the safe and perfect ventilation ofthe room, either from above or below the sashes, or from both at thesame time, for the sashes may be locked at such a point as to leave anopening above the upper and below the lower sash at one and the sametime, and this secures the most thorough ventilation, as the hot airfromthe room can pass out in one current above while the cool air is comingin from below.

hat I claim as my invention, and desire to secure by Letters Patent, isthe following:

1. A sash-fastener comprising a casing 7, having a tapering bolt 8seated therein, a spring coiled around such bolt, forcing the sameoutward by its tension, a removable key 9, having a flange 10, anopening in the upper part of the casing to allow the insertion andoperation of such key, such opening having an enlargement, whereby whenthe key is turned and engages in such opening the bolt is retainedwithin its casing, substantially as shown and described.

2. A saslrfastener comprising a lock having a tapered bolt seatedtherein, a removable key, an opening in the upper part of the lock toallow the insertion of the key, such opening having an enlargement atone end for engaging with a flange formed on such key, whereby the boltis retained within the casing, such lock fitting into the top of themeeting-rail of the lower sash, in combination with a metal plate letinto the side rail of the nppersash and provided with a central grooveand aseries of tapering sockets, substantially as shown and described.

In witness whereof I have hereunto set my hand this 26th day ofDecember, 1891.

LEW IS O. XVALKER.

\Vitnesses:

E. B. GRIFFITH, C. P. JACOBS.

